Improvement in flexible joints for water-pipes



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MICHAEL C. DUFFEY, OF WASHINGTON, DISTRICT OF COLUMBIA.

Letters Patent No. 99,172-, dated .Tamm-ry 25, 1870.

IMPROVEMENT IN FLEXIBLE JOINTS FOR-WATER-PIPES.

The Schedule' referred to in these Letters Patent and making part of the same.

Nature and Objects of the Invention.

The object of my invention is to provide, as a substitute for the putty joint usually employed to cover and close the connection between the supply-pipe and the basin-arm in water-closets, urinals, and other waterapparatns, a more durable and secure joint, and one which may be readily and quickly applied.

.To this end 1 construct a tubular Y joint ot` India rubber, or analogous elastic material, which may be cast in one piece, and preferably in the form of two hollow cylinders, of unequal diameter, placed end to end, the smaller part being adapted to tit tightly over the supply-pipe, and the larger part to clasp the basin-arm, within which the pipe is introduced in the usual manner.

Description of the Drawing.

A represents the arm ofthe basin B, whichmay be i constructed in any customary or suitable way.

C is the supply-pipe, introduced through the arm A, as is usual.

At D, in iig. 1, is shown a longitudinal section of my gum-elastic joint or connection, and the same is shown in full size, in perspective, in iig. 2.. It is cast in one piece of India rubber, or analogous material, with cylindrical openings or chambels, of unequal diameter, passing longitudinally through, and connected in the centre.

The smaller' end :l is thus adapted to it tightly around the supply-pipe C, while the chamberd, in the larger end, clasps thev arm A, as clearly shown in tig. 1.

V Operation.

Before introducing the supply-pipe into the basiliarm, the elastic joint or connection is drawn over the pipe to a sutlicient distance. The end of the pipe is then inserted in the arm,'and the larger part of the rubber joint drawn over the same.

A rib Vor enlargement may, if preferred, be formed on'the end of the arm, to hold the rubber joint more /sec1nely; but, without this, a secure and durable watertight connection is formed between the pipe and arm.

This connection is much more readily applied than the usual putty joint, and has not the clumsy and unsightly appearance ot' the latter. l

Its elasticity permits any slight motion of the pipe, in relation to the basin, without danger of impairingvthe joint, and the well-known property, in India rubber, of cohering to metal, causes it to become still more permauen tly and securely fixed in position in the course of time.y

A further advantage of my rubber joint is seen in the fact that it is not`l subject to injury by rats, the depredations of which constitute a frequent and annoying cause of destruction of the joint in common use -for this purpose.

I do not claim, broadly, a tube of different diameters at its respective ends, as I am aware that such tubes have before been made of rigid material, for different purposes; but

I claim, as my invention- The joint or connection D d d', constructed ot' elastic material, and adapted for use in the manner andfor the purposes herein set forth.

Witnesses p OorrAvIUs KNIGHT, F. M. KnAUcKn, J r.

M. C. DUFFEY. 

